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Driver's Side Rear O2 sensor extension

Souperman

New Member
Joined
Jan 18, 2026
Messages
3
Location
Hudson Valley NY
V-Series Cadillac(s)?
2023 Cadillac CT5-V Blackwing 6M
Wrapping up my header install and getting everything buttoned up. The last bit I'm fighting with is the driver's side rear O2 sensor.

The passenger side didn't need an extension at all so I figured the drivers side would be more of the same. But that sensor on the engine harness is more or less behind the supercharger, and the wire coming off the O2 sensor is so far back, I either got them mixed up when I installed them or I'm doing something wrong here.

Attached below is the plug end coming out of the O2 sensor. Did I maybe accidentally get them mixed up?
 

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  • PXL_20260224_225837992.jpg
    PXL_20260224_225837992.jpg
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